Work

Dissipative cooling towards phantom Bethe states in boundary-driven XXZ spin chain

Year: 2022

Type: article

Abstract: A dissipative method that allows to access the family of phantom Bethe states (PBS) of boundary-driven XXZ spin chains is introduced. The method consists in coupling the ends of the open spin chain to suitable dissipative magnetic baths to force the edge spins to satisfy specific boundary conditions necessary for the PBS existence. Cumulative monotonous depopulation of the non-chiral components of the density matrix with growing dissipation amplitude is analogous to the depopulation of high-energy states in response to thermal cooling. Compared to generic states, PBS have strong chirality, non-trivial topology and carry high spin currents.

Source: Europhysics Letters (EPL)

DOI: 10.1209/0295-5075/ac954b

Authors: Vladislav Popkov, Mario Salerno

Institutions: University of Ljubljana, University of Wuppertal, University of Salerno, Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Salerno

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,665

Funder: Deutsche Forschungsgemeinschaft